Linux + PCI Adapter + WMM

I have a WMM (WiFi Multimedia) capable access point with WMM enabled.
I am about to install a few Linux desktops using a PCI Adapter (more
precisely, a D-Link PCI Adapter DWL-AG530) and I will run X-Lite to do
VoIP.
Does anybody has experience to share with a situation like that? How
will it be possible to map X-Lite generated packets into WMM priority
queues?
I know X-Lite can mark with DCSP levels, but I don´t know how to map
into the WMM service levels...